本文提出MSW效應伴隨微中子衰變機制來解決太陽微中子問題。其中，微
中子衰變機制取決於微中子與majoron的藕合常數g。利用此機制分析已知
的太陽微中子觀察結果對微中子混成角和質量平方差的推算值與純粹MSW
效應的推算值幾乎沒有差別。但是此機制預測了反微中子的產生，這點可
由將來Borex實驗結果來驗證。數值計算的結果預測，當g=1×10■時，反
微中子通量在弱混成和強混成下，分別為6.67×10■cm■s■和4.47×10
■cm■ s■。而當g=1×10■時，相應值為9.17×10■cm■s■和2.74×10
■cm■s■。因此，將來Borex實驗若顯示了MSW效應伴隨微中子衰變機制
是解決太陽微中子問題的可能方案，則可以進一步確定藕合常數g的數值
、MSW效應的過程、和微中子混成角及質量平方差等基本特性。

A more detail consideration of matter effect of the neutrino
decay catalzed by the MSW effect is proposed in this thesis.
Although there is no obviously different result about the of
the solar neutrino problem by this mechanism and MSW effect,
there are some useful predicts about the antineutrino flux
which is produced by this mechanism. As g=1×10■, antinetrino
flux is 6.67×10■cm■s■ for weak mixing and 4.47×10■cm■s■
for mixing. As g=1×10■, anti-neutrino flux 9.17×10■cm■s■
for weak mixing and 2.74×10■cm■s■ for strong mixing. These
singal canbe detected by Borex and then the process of MSW the
conpling constant、 difference of square mass 、and sin■2θ
can be determined also.
A more detail consideration of matter effect of the neutrino